Improvement in revolving fire-arms



F. 1). NEWBURY.

Revolver.

. Patented June 29, 1858.

UNITED STATES PATENT OFFICE.

F. D. NEWBURY, OF ALBANY, NEW YORK, ASSIGNOR TO lt. V. DE \VlTT, JR. OFSAME PLACE.

IMPROVEMENT IN REVOLVING FIRE-ARMS.

Specification forming part of Letters Patent No. 20,765, dated June 29,IP58.

To all 'whom it may concern:

Be it known that I, FREDERICK D. NEW- BURY, of the city of Albany, Stateof New York, have invented certain Improvements in the Construction ofFire-Arms; and I declare Similar letters in all the figures denote thesame parts of the piece.

A A is the skeleton stock-framing of a pistol expanded into a frame, B,to hold the usual revolving cylinder, 0. This cylinder turns upon axlesat each of its ends, the rear one passing through the back-bar of theframe, or what is called thefaee-platc,D, (being adisk equal in diameterto the cylinder,) behind and against which it carries the ratchet-wheelr, firmly attached to it, (the axle.) By this wheel the cylinder G isturned around through the action of the trigger T. This trigger, shapedas shown in the drawings, is pivoted to the frame at 0, near its top,and has projecting from it forward a limb, a, which is fitted to conformto the spaces between the teeth of the wheel 1, (see Figs. l and 4,) sothat while the trigger is held firmly in position of Fig. 3 the wheelshall be blocked and held immovable. This limb also serves by aratchet-pawl movement to turn the wheel 1'. From the back of the triggeranother limb, or, projects to the rear, and is terminated by a smallnotch or nick. This limb operates the hammer Hby means of a pin, I),inserted into its side above its axis, the upper edge of the limb lyingunder the pin before the trigger is drawn, as shown in Fig. l.

The operation of the piece is as follows: The cylinder being loaded andcapped and the machinery standing in the position as shown in Fig. 1, apull upon the trigger, pressing the upper edge of the limb as againstthe pin b, will raise the hammer'until the front end of the pin, whichis fitted for that purpose, drops into'the. notch at the end of thelimb, cooking the piece. A further pull upon the trigger will disengagethe pin from the notch, and the hammer will be driven down by the springS upon a cone of the cylinder, the pin passing under the limb m, asshown in Fig.3. When the trigger is in the position of Fig. 1 the loweredge of 'i s front limb, a a, rests upon the upper edge of a tooth ofthe wheel 1, and as the trigger is drawn back the descent of the limbturns the wheel, and with it the cylinder; and when the trigger is drawnback to its fullest extent the. limb a, fitting snugly against the facesot two adjacent teeth, holds the wheel from moving during the descent ofthe hammer, preventing the deviation of the chamber of the cylinder fromthe range of the barrel at the momentof firing. This will be seen inFig. 4, which is a view of the ratchet-wheel and trigger, taken at theback edge of the face-plate D, looking toward the butt of the piece, theplate D being considered transparent to show the mechanism behind it.The piece being fired and the trigger released, it (the trigger) isthrown tbrward by a spring, 2, when the limb 00 passes down over the pin1), the end of the pin being beveled with an upward slope and the end ofthe limb beveled with a downward slope to permit the easy passage of theone over the other, aided by the elasticity of the trigger, and theparts take their place, as in Fig. l. Atthe same time the limb (itpasses up along the tooth of the wheel -r, against which it lies untilit springs over its upper edge, where it rests, ready upon the next pullof the trigger to act upon that tooth. While this last operation is going on the cylinder is held from revolving by the pressure of the hammer,which lies upon one of the cones. The piece is now ready for arepetition of the tiring.

The wheel 1" has the number of its teeth to correspond with the numberof chambers in the cylinder, and the proportions of the limbs a and asand place of pin 8) are graduated in reference to the extent of thesweep of limb a in moving the cylinder.

It must be noted that it is not necessary to stop the movement of thetrigger in order to cook the hammer, as shown in Fig. 2; but the fullsweep of the trigger may be given at once, and so the chambers bedischarged rapidly in succession by quick pulls of the trigger.

What I claim, and desire to secure by Letters Patent, is-

1. The trigger T, formed, fitted, and operating as described, for thepurpose of cocking the hammer, revolving the cylinder, holding thecylinder in the act of firing, and firing the piece.

2. The combination of hammer, its pin b, the trigger, and theratchet-wheel, formed and arranged substantially and for the purposesset forth in this specification.

F. D. NEWBURY. Witnesses:

E. J. MILLER, RICHD. VARIOK DE WI'rT.

